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SEM/EDX micrographs of composite fibers, confirming the presence of BG particles in (a) PCL/PGSmxl/13-93 (S3), (b) PCL/PGSmxl/13-93BS (S4), (c) PCL/13-93 (S6), (d) PCL/13-93BS (S7) samples. In all micrographs two insets related to the mapping of carbon and calcium are reported.
